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Whitworth Thread Gauge

The numbers don't quite match the tables?

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herbert punter20/08/2015 12:38:05
128 forum posts
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The 1" looks ok but the others are a bit odd.

Edited By herbert punter on 20/08/2015 12:40:04

JasonB20/08/2015 12:42:52
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25215 forum posts
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Seem to match this chart

NJH20/08/2015 12:49:14
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2314 forum posts
139 photos

Agreed

They are as shown in my (25th) edition of Machinery's Handbook

Norman

John Stevenson20/08/2015 13:01:44
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5068 forum posts
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The only bit that's relevant on these gauges is the pitch number.

 

A 12 pitch thread for instance can be on any diameter and they still work fine measuring British [ 55 degree ] or American [ 60 degree ] threads.

 

Not even sure if mine have any other info on them as I never look.

Edited By John Stevenson on 20/08/2015 13:02:09

Bazyle20/08/2015 17:59:07
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6956 forum posts
229 photos

Every set is different. I think they feel just putting the one number for pitch won't look clever enough so slap on a bit more.

I wonder what our 'Brand' team would dream up, apart from having to be red and have a blue LED on it. What! they want to charge per letter! Not paying for that, why do they need these numbers on them anyway, just make them all the same size and only put the company logo on.

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